Home / 131,146.64-196,530.96-74,813.12

Finding the Fourth Proportional to 131,146.64, 196,530.96 and 74,813.12

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Solution

The fourth proportional to 131,146.64, 196,530.96 and 74,813.12 is: 112,111.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,146.64 : 196,530.96 = 74,813.12 : x
  2. Step 2: Convert to fraction form
    131,146.64/196,530.96 = 74,813.12/x
  3. Step 3: Cross multiply
    131,146.64x = 196,530.96 × 74,813.12
  4. Step 4: Simplify right side
    131,146.64x = 14,703,094,294.20
  5. Step 5: Solve for x
    x = 14,703,094,294.20/131,146.64
  6. Step 6: Final answer
    x = 112,111.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.